Free practice test

Small Engine Mechanic Practice Test

Check what you know about the small engine mechanic job with 15 free questions and instant explanations.

Updated By the Career Education Institute Curriculum Team
About this practice test

15 multiple-choice questions on small engine mechanic knowledge, safety and vocabulary. Submit to see your score and explanations, or open any question’s answer as you go. Nothing is saved or shared.

Question 1 of 15What three things does an engine need to run?
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Answer: Fuel, spark and compression. Fuel, spark and compression are the basics.

Question 2 of 15Old ethanol fuel often causes:
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Answer: Gummed carburetors. Ethanol can absorb water and gum fuel systems.

Question 3 of 15Before removing a mower blade you should:
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Answer: Disconnect the spark plug wire. This prevents accidental starting.

Question 4 of 15A sheared flywheel key affects:
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Answer: Ignition timing. The key sets flywheel position and timing.

Question 5 of 15Two-stroke engines often use:
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Answer: Mixed fuel and oil. Many two-strokes run on a fuel-oil mix.

Question 6 of 15Which term matches this definition: “Problems caused by ethanol absorbing water and gumming fuel systems.”
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Answer: Ethanol fuel issues. Ethanol fuel issues: Problems caused by ethanol absorbing water and gumming fuel systems.

Question 7 of 15What does “Carburetor” mean?
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Answer: A device that mixes fuel and air.. Carburetor: A device that mixes fuel and air.

Question 8 of 15Which term matches this definition: “A part that creates the high voltage for the spark plug.”
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Answer: Ignition coil. Ignition coil: A part that creates the high voltage for the spark plug.

Question 9 of 15What does “Recoil starter” mean?
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Answer: The pull-rope starting mechanism.. Recoil starter: The pull-rope starting mechanism.

Question 10 of 15Which term matches this definition: “A test that checks engine sealing.”
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Answer: Compression test. Compression test: A test that checks engine sealing.

Question 11 of 15What does “Governor” mean?
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Answer: A system that controls engine speed under load.. Governor: A system that controls engine speed under load.

Question 12 of 15Which term matches this definition: “An additive that keeps fuel fresh in storage.”
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Answer: Fuel stabilizer. Fuel stabilizer: An additive that keeps fuel fresh in storage.

Question 13 of 15What does “Two-stroke engine” mean?
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Answer: An engine that completes a power cycle in two strokes, often using mixed fuel.. Two-stroke engine: An engine that completes a power cycle in two strokes, often using mixed fuel.

Question 14 of 15Which term matches this definition: “The housing around a mower’s blades.”
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Answer: Deck. Deck: The housing around a mower’s blades.

Question 15 of 15What does “Spark arrestor” mean?
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Answer: A screen that prevents sparks from leaving the exhaust.. Spark arrestor: A screen that prevents sparks from leaving the exhaust.

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